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The set of four bases in DNA is denoted as which group?

• A, U, G, C

• A, T, G, C

• A, U, G, T

• U, T, G, A

To distinguish structural genes from regulatory genes, the classification is based on what?

• The function of the gene product

• The phenotype expressed

• The mode of gene interaction

• Gene structure

Which region of a gene determines the amino acid sequence of the encoded protein?

• Operator region

• Coding region

• Regulatory region

• Terminator region

The specific anticodon belongs to which type of RNA?

• mRNA

• DNA

• tRNA

• rRNA

In eukaryotes, the nucleotide sequences within a gene that actually code for amino acids are called what?

• Introns

• Fragmented gene

• Operator region

• Exons

Which sequence correctly represents the flow of genetic information at the molecular level?

• Gene → mRNA → Polypeptide → Protein

• mRNA → Gene → Polypeptide → Protein

• Gene → Polypeptide → mRNA → Protein

• Gene → Polypeptide → mRNA → Protein

During translation, the first peptide bond is formed between which two components?

• The initiator amino acid and the next (first elongating) amino acid

• Any two adjacent amino acids

• The initiator amino acid and the second elongating amino acid only

• Two random amino acids

The fact that the codon 5' AUG 3' specifies methionine in eukaryotes demonstrates which property of the genetic code?

• Degeneracy

• Specificity

• Universality

• Ambiguity

The primary enzyme that participates in transcription is which of the following?

• RNA polymerase

• DNA polymerase

• DNA ligase

• Restriction endonuclease

During transcription, the newly synthesized polynucleotide chain is elongated in which direction?

• 5' → 3'

• 5' → 5'

• 3' → 5'

• 3' → 3'